#include <LEDA/core/string.h>
#include <LEDA/numbers/integer.h>
#include <stdio.h>
#include <iostream.h>

using leda::string;
using leda::integer;

int main( int argc , char *argv[] ){
    //string s;
    integer num;
    cin >> num;
    fprintf( stdout , "Ohshit\n" );
    cout << sqr( num ) << endl;
    return 0;
}
